Sympy-exact witness of the k=1 chi-square distribution moments. Setup: E[χ²_k] = k, Var[χ²_k] = 2·k as one-symbol linear functions of k. Identity: at k=1, E = 1 (mean unity), Var = 2 (variance twice the mean, the distinctive χ²…
Sympy-exact witness of the k=1 chi-square distribution moments. Setup: E[χ²_k] = k, Var[χ²_k] = 2·k as one-symbol linear functions of k. Identity: at k=1, E = 1 (mean unity), Var = 2 (variance twice the mean, the distinctive χ²…